Faux motivation: My ratings tend to be offshoots of circumstance and/or the delusion of the day and are loosely motivated by the non-scientific impulse to triangulate DE(CH/AT)-BE(FR)-(UK)US beer terroirs and drinking cultures.
As a personal project in comparative anthropozythology I am introducing the Ratebeer Miserable Boozer/Bastard Index (MBI):
MBI = amount of beers rated 3.9 or higher / Total Amount of Beers rated (in %)
Works like pH levels. If your MBI drops below 10%, start asking yourself some serious questions whether you still like drinking beer, are consciously seeking out quality or poor new stuff, or just like voicing disappointment with your (drinking) life in general.
Advanced MBI (AMBI): beers rated / beers rated 4.0 or higher
Currently looking to try more traditional UK ales, Baltic Porters, Polish beers and work through MJís 500, 1001 BTTBYD.